OliveTin up to 2025.03.07 Filter filterToDefinedArgumentsOnly input validation

Summaryinfo

A vulnerability, which was classified as problematic, was found in OliveTin up to 2025.03.07. This affects the function filterToDefinedArgumentsOnly of the component Filter. Executing a manipulation can lead to input validation. This vulnerability is registered as CVE-2026-53541. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in OliveTin up to 2025.03.07. It has been declared as problematic. This vulnerability affects the function filterToDefinedArgumentsOnly of the component Filter. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect integrity. CVE summarizes:

OliveTin gives access to predefined shell commands from a web interface. The `filterToDefinedArgumentsOnly` function in the executor is intended to discard any arguments not explicitly defined in the action's configuration. However, prior to commit ebffd9f040f791208aee1db2e5a8aecd1e3e603d, a special case allows any argument whose name starts with `ot_` to bypass this filter. While two system arguments (`ot_executionTrackingId` and `ot_username`) are injected by OliveTin and overridden, all other `ot_`-prefixed arguments supplied by the user pass through unmodified. These bypassed arguments are not type-checked — the validation loop only iterates over the action's defined arguments, so `ot_`-prefixed arguments skip all type safety checks entirely; set as environment variables — via `buildEnv()`, with completely unvalidated values, and passed to the executed command; and included in the template context — available as `.Arguments.ot_*` in template rendering. Commit ebffd9f040f791208aee1db2e5a8aecd1e3e603d contains a patch.

The advisory is available at github.com. This vulnerability was named CVE-2026-53541 since 06/09/2026. The exploitation appears to be easy. The attack can be initiated remotely. Technical details are known, but there is no available exploit.

Applying the patch ebffd9f040f791208aee1db2e5a8aecd1e3e603d is able to eliminate this problem.

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Productinfo

Name

• OliveTin

Version

• 2025.03.07

Website

• Product: https://github.com/OliveTin/OliveTin/

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